Power take-off



P. BQ QUE POWER TAKE OFF Filed April 17, 1931 INVE R' Patented Sept. 26,1933 UNITEDISTATEYAS;

3 claims" (01.180533) a My invention relates to a new and usefulimprovement in a power take off adapted for use primarily on motortrucks which are motor driven and fromthe drive'shaft of which it is.desired to transmitpower to'other devices for operation of the same".

vide an arrangement wherebyjthe operation of the rear or drivingwheels'of the vehicle may be suspended when the pulley which serves asthe power take off is beingoperated forpowerpurposes. v a V To this endI provide a clutch, one section of which is constantly rotating whilethe engine is in operation, and it is an object of the present inventionto provide a bearing for the driving'shaft adjacent the clutch so "as toform a rigid and durable construction. p I

It is another objectof the invention to'pro vide a particular form ofmounting for the hearing of the" drive shaft in which thebearing may 7be securely mounted on the oppositely positioned chassisrails of thevehicle. v

Another object of the invention is the provision of a device of thiskind in which the drive shaft is encased in a tube to connect the powertake off pulley on the drive shaft at that portion which is usuallyencased in a housing, and at the same time to in no -manner interferewith or minimize the reinforcingand stabilizing functions of the driveshaft or tube. V

Another object of the invention is the provision in a device'of thiskind of a simple and effective mounting which may be easily and quicklyinstalled, which will be economical of manufacture, which may be easilyoperated and which will be highly efficient in use.

Other objects will appear hereinafter. The invention consists in thecombination and arrangement of parts hereinafter described and claimed.I

The invention will be best understood by a reference to the accompanyingdrawing which forms a part of this specification, and in which, Fig. 1is a central longitudinal sectional view of the invention, with partsshown in side elevation. 7

Fig. 2 is a sectional view taken on line 2--2 of Fig. 1.

Fig. 3 is a view taken on line 3-3 of Fig. 1. Fig. 4 is a longitudinalcentral vertical sectional view of a modified form of the invention.Fig. 5 is a sectional view taken on line 55 of Fig. 4. v

In the drawing I have illustrated the invendesired type. Projectingoutwardly from one face which will appear later.

shaft 16 and is provided on its face with pockets channel arm 3dvwhichifo rms a transverse sup- I bell crank 24 and at the other end tothe lever 81 1 6o;

pockets or recesses 30.

tion used in connection with a mechanisinhaving a transmission box9'extending rearwardly' I from, which is a ri e shaft'l10. ounte fixedlyon the drive shaft 10 is a'pu'lley 111 which serves v also as aclutchsection and which is pro'vided' v V on its peripheryf'with aplurality .of-"v'not'che'si It is an object of the present inventiontofpro- 12 for drivinga V.- belt which may be used there-- r with; Asthe description proceeds, however, it I will be obvious that the'pulley11 may be of any.

ofthepulle'y 'll are "istudsais; the purpose of'jj Mounted in the boreof the pulley l1. is aYbear-I ing 14in which engages" the reducedportionjl5ll I of the drive shaft extension 16 which extendsinto 0thefluniversal coupling housing l'i fromwhich a. rear drive' shaft 18extends. This coupling-17 is held in rigi'd position by its fastenin fion the' transverse bars111 9 "and 2 0 which connect to the oppositely'dis'po se'djchassi's 'rails 21 ,a nd 22., "Projecting outwardly fromthe bar -1 9 is "a bracket 23 1 -i bl i ounted? the.

bell crank 24 carrying theforks 25'aiid26 each of which is provided witha roller 27 engaging in the peripheral groove 28 formed on the clutchsection 29 which is provided with the flat faced bore 79 in whichengages the flat faced bushing '78 fixedly mounted on the shaft 16. Theclutch section 29 is axially movable relativelyto the 30 for receptionof the studs 13 so that whenlthe section 29 is moved inwardly toward thepulley- 11 which forms the other section of the clutch and the studs 13are engaged in the recessesor pockets 30, the shaft 16 will rotate inunison with the shaft 10. A collar 31 is fixedlymounted on the shaft 10adjacent the bearing housing 33 in which is positioned the bearing 32for the shaft 10. This bearing housing is mounted upon the portextending from and connected at its opposite ends to the oppositelydisposed chassis rails 21' and 22. 1! rod 80 is connected atone end tothe so that a rocking of the lever 81 will effect va movement of theclutch section 29 relatively to the section 11.

When it is desired to use the pulley as a power. take off, the parts aremoved tov the position shown in Fig. 1, and when it is desired to drivethe vehicle the clutch section 29 is-moved to the; position in which thestuds 13 engage in the The structure which I have described isone whichmay be easily and quicklymounted'on a vehicle chassis and mounted insuch a durable manner thateificient operation of the same at all timesis. assured and the necessary rigidity v for operation of a device ofthis kind obtained. I '5 In the form shown in Figs. 4 and 5, I haveillustratedthe invention used for a vehicle having, adrive shaft 39which extends rearwardly from the universal joint housing 37 and whichis V encased in a tube. 38. This tube 38-is indicated as terminatingina'bearing housing-40 in which is mounted the bearing 41 for the shaft39. This bearing housing is enlarged and formed into a' housing 42 whichserves to enclose the takeoii pulley 11 which forms a part of the clutchand which co-operates' with the clutch section :29 as described for theform in Fig. 1. This clutch-,

- section-29 is of the same structure as" the clutch section 29 shown inFig. 1 and'lis provided with pockets or recesses for accommodating thestuds.

13 which are fixedly mounted in the pulley 11".

A' disc 43 is formed. integral. with the tube-.44 which. encloses "theextension 116'" whichis secured to thetubular projection 45wln'ch ex.

tends outwardly from the differential housing '46..

; The rollers 27 carried by the. yoke arms2'5' engage. inthe'peripherallgroove 28.1 Rockably mounted.

on the tube '44 is the'l'ever 47 connected. by the.

link 43 to the arm 49" from. which'pro'ject the yoke arms 2.5. Asuitable rod..80" i'scorinected 3&5 tothe lever 47 for efi'ecti'ng. the1=ocking. move-.-

-ment of" this lever 47. It is thus 'seeri that. in a construction ofthis type I have. interposed the;

. power take off "on a drivefsha'ft which is. encased in a tube and bymy construction I in no manner.

*;interferewithtlie strength. of the tube. and the preinforcing"characteristics thereof; I This. I is. ac oomplishedbyenlarging) the tubej'at that. portion whereflthe takeoff pulley islbcatedsoas-to maintain the original strength of" the tube.

While I. have illustrated and described the pre Patent is:

:housing; a disc attached to said housing; a tube atakeoff pulleymounted on,said-;re arwardly;ex-

I shaft. in unison with said pulley;

ferred form of construction of'my' invention, 1'

do not wishto limit. myself to the precise details; of structureshown;but desirelto availl myself' ofsuch variations and modifications as maycome within the scope of the appended claims.

Having thus'described my invention, what I claim as new and desire tosecure by Letters 1. Ina construction of the class described adapted foruse with a vehicle'having a rearwardly extended drive shaft and astationary tube enclosing said drive shaft, an; enlargement on said tubea bearing said enlargement for supporting said shaft; a housing formedonjsaid tube; a take-01f pulley on said shaft within said extendingrearwardly fromsaid disc; an extension sl'iait projected through saidlast mentioned tubeyanda clutch section mounted on'said extension shaftandco-operating with said take off pulley for controllingstherotationofsaid extension shaft in unison with said pulley.

a clutch section slidably mounted'on said eXtension shaftengageable'withsaid take off pulley for effecting rotation: of said extension' 3In a construction; of. .the class described 1 adapted for use with avehicle having a rear-j wardly extending shaft;v .an extension shaftfinalignment-with said rear-wardly extending; shaft}. atake off; pulleymounted. on: said rearwardly extending-, shaft; a bearing for saidrearwardly. extending shaft adjacentsaid-- take off pulley; a bearingfor the end of said extension-shaft ad jac ent said pulley; anda clutchmechanism associated with: said shafts.and concentric of 1151 pulleyforeffecting a rotajtion-of said extension shaftiifn unison withsaidpulley.I

' PHILPQB OURQUEQq

